Clamp for antiskid devices.



a wjd azi v G. T. HECKMANN.

Patented Sept. 4, 1917.

George TJ-[ec rmam W M I Q. ig

WITNESSES:

A TTORNE 1 GEORGE T. HECKMANN, OF ST. LOUIS, IilIl'SSOURI.

CLAlVlZP FOR ANTISKID DEVICES.

Application filed August 4, 1916.

To all whom it may concern.

Be it known that I, GEORGE T. HEOK- MANN, a citizen of the UnitedStates, residing at St. Louis, State of Missouri, have invented certainnew and useful Improvements in Clamps for Antiskid Devices, of which thefollowing is a full, clear, and ex act description, reference being hadto the accompanying drawings, forming a part hereof.

My invention has relation to improvements in clamps for anti-skiddevices for tires; and it consists in the novel features of constructionmore fully set forth in the specification and pointed out in the claims.

The present invention is directed to that class of anti-skid deviceswhich involve the use of a chain transversely encompassing the tire andfelly of the wheel, the object of the invention being to provide asimple form of clamp for securing the ends of the chain, said clampbeing carried by the spoke of the wheel. A further object is to providea clamp which may be readily and quickly removed from the spoke and asquickly applied thereto when occasions arise to attach the chain to, ordetach the same from, the wheel. A further object is to provide a clampcomposed of two sections or jaws which when assembled are locked againstdisplacement, the locking means at the same time serving as an anchorfor one of the ends of the chain. The invention possesses advantageswhich will be readily apparent from a detailed description thereof inconnection with the accompanying drawings, in which Figure 1 representsa side View of a portion of a wheel felly and tire showing my inventionapplied thereto; Fig. 2 is a cross section on the zigzag line 22 of Fig.l,

Fig. 3 is a perspective view of the clamp; and Fig. 4 is a plan viewthereof.

Referring to the drawings, 1, represents the fellyof the wheel, 2, aspoke, and 3, the tire, all as well understood in the art. The anti-skidchain is represented by 4, the same being passed transversely around thefelly and tire, the ends of the chain being secured to the clamp towhich the present invention is specifically directed.

In the present embodiment of my invention the clamp comprises a pair ofawe 5, 6, respectively, the same being suitably curved to jointlyembrace the spoke 2 as shown. The jaw 5 forms an integral part of an en-Specification of Letters Patent.

Serial No. 113,128.

larged hollow shank a having inclined sides and parallel end walls (Fig.41:), the end walls of said shank loosely receiving the cylindrical.shank Z) of the jaw (3 and the terminal sorew-threaded stem 0 thereof.i.roje ;ting from the outer face of the jaw o is a bent arm or linger 7whose free end is disposed parallel to the shank z) and stem 0 of thejaw, the finger being adapted to be received in an. o iening 0 formed inthe adjacent wall of the shank a of the jaw The linger T may be readilyretractml or disengaged from its opening 0 by drawing the jaws apartsuliiciently to effect the dis engagement as shown by the dottedposition of the parts in Fig. 4:. The linger '7 (or its equivalent)subserves a twofold purpose. In the first place, and when the parts areassembled, it locks the jaw (3 against rotary displacement; and in thesecond place it permits the use of a simple, closed, anchoring ring 8carried at the inner end of the chain l, thus dispensing with thenecessity of e1nploying a snap-hook or equivalent form of connection asis the case where the jaw of the clamp is equipped with a closed loop oreye to which such snap-hook is fastened. The jaw 5 in the present caseis provided with an eye 9 to which the ring 10 at one end of the chain ais permanently secured. The stem 0 carries a wing-nut 11, a lockingwasher 12 being preferably interposed between it and the member a.

The manner of attaching the device is as follows: The aws 5, 6, arefirst passed about a spoke 2, the nut 11 being unscrewed sailiciently toallow for su'liicient longitudinal movement of the shank b in the shanka to permit withdrawal of the finger 7 out of the opening 0 and beyondthe inner terminal wall of the shank a to permit the passage of the ring8 over the finger. By now reinserting the linger into the opening 0 andtightly screwing the nut 11, the chain is securely clamped to the wheel.To remove the chain at any time, the reverse of the operations describedis necessary. The moment the linger 7 is withdrawn from its socket oropening 0 the jaw 6 may be swung rotatively about the axis of the shankZ) thus permitting manipulation of the parts for the quick passage ofthe ring 8 over the linger. The ring 8 being once passed over thefinger, the latter is rotated into alinement with the hole 0, thenreinserted thereinto and the parts clamped as already described. The

Patented Sept. ail, illilt/Q details here shown may obviously bedeparted from without in any wise affecting the nature or spirit of. myinvention. Toinsure a firm grip on the spoke the jaws 5, 6, arepreferably lined with a layer of'leather, rubber or equivalent materialm.

Having described my invention what I claim is:

l. A clamp con'iprising a pair of separable jaws adapted to jointlyembrace a suitable supporting member, one of said-jaws being; providedwith an opening at a point beyond the opposite jaw when the jaws areassembled, a finger projecting from thee-pposite j aw and having aterminal bent to be received by the opening of the first jaw whereby aclosed loop is formed by saidfinger with, the firstjaw, and means forholding the jaws against a separating movement when once assembled.

' 2. A clamp comprising a pair of separable jaws conjointlyembracing asuitable sup.-

porting member, an enlarged hollow shank formed with one of the jaws, acylindrical shank terminating. ina, screwthreacled stem formed with theopposite jaw and freely traversingthe-enlarged shank aforesaid, a fingeron said opposite jaw disposed parallel tothe axis of the cylindricalshank and re ceivable by an openin or socket formed in the adjacent wallof the enlarged shank of the first jaw for locking the opposite jawagainst rotary displacement, and a securing nut on the screw-threadedstem ofthe cylindrical shank of the opposite j aw operating toibe drivenagainstthe adjacent wall of Copies of this patent may be obtaine d forfive cents each by addressing the (Commissioner oflPatents Washingtomj)G.

